Wind-driven electricity generation system of type having storage battery and device for controlling charge and discharge of storage battery

A wind-driven electricity generation system of a type having a storage battery comprising:

• a wind-driven electricity generator, driven by a wind power, for generating a power to be supplied to a power circuit;
• the storage battery for charging/discharging a part of the power generated by the wind-driven electricity generator;
• and
• a device for controlling the charge and discharge of the storage battery,
• the device for controlling the charge and discharge including:
• an instantaneous response detecting portion for sequentially detecting, as an instantaneous response element, an instantaneous value of a quantity of the power generated by the wind-driven electricity generator;
• a variation calculating portion for calculating a variation per unit time of the instantaneous response element which is detected by the instantaneous response detecting portion;
• a charge and discharge control portion for controlling the charge and discharge of the storage battery depending on the instantaneous response element detected by the instantaneous response detecting portion;
• a pattern information storing portion for storing plural kinds of pattern information related to an instantaneous response control region representing a capacity of the storage battery which is to be assigned to the control of the charge and discharge of the storage battery depending on the instantaneous response element;
• and
• a pattern information selecting portion for selecting one of the plural kinds of pattern information stored in the pattern information storing portion and causing the pattern information to apply to the control of the charge and discharge of the storage battery through the charge and discharge control portion based on the variation per unit time of the instantaneous response element which is calculated by the variation calculating portion.